Agnetha Faltskog
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Abba's Agnetha comes out of retirement

11 March 2013 Last updated at 06:30 GMT

One of pop's most enigmatic voices has emerged with her first album in nine years.

Agnetha Faltskog's new album sees her duet with Gary Barlow and collaborate with Britney Spears' Swedish songwriting team.

Watch a clip of the first single from the album, When You Really Love Someone.